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Author Question: Human interface design is performed during: A) systems planning and selection. B) systems ... (Read 118 times)

jhjkgdfhk

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on: Jul 7, 2018
Human interface design is performed during:
 
  A) systems planning and selection.
  B) systems analysis.
  C) systems design.
  D) systems implementation and operation.
  E) requirements structuring.

Question 2

The value of a key attribute in a relation must uniquely identify every row in the relation.
 
  Indicate whether the statement is true or false


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potomatos

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Reply #1 on: Jul 7, 2018
Answer to Question 1

C
Explanation: C) Both designing the human interface and designing databases are part of the systems design phase of SDLC.
CL

Answer to Question 2

TRUE
Explanation: This is because in a relation, each row must be unique. This primary key ensures that each row is unique.
CL


jhjkgdfhk

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Reply 2 on: Jul 7, 2018
Thanks for the timely response, appreciate it

helenmarkerine

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Reply 3 on: Yesterday
Gracias!

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